静态库的创建和编写makefile

静态库的创建

[root@localhost 2017]# gcc -c add.c sub.c mul.c divi.c

[root@localhost 2017]# ar rcs libzong.a add.o sub.o mul.o divi.o
[root@localhost 2017]# gcc -o main main.c -L. -lzong
[root@localhost 2017]# ./main
please input the number is:
5,6
a + b = 11
a - b = -1
a * b = 30
a / b = 0
[root@localhost 2017]# 8,4
bash: 8,4: command not found
[root@localhost 2017]# ./main
please input the number is:
8,4
a + b = 12
a - b = 4
a * b = 32

a / b = 2

编写makefile

[root@localhost 2017]# make
gcc -c main.c
gcc -o main main.o add.o sub.o mul.o divi.o
[root@localhost 2017]# vim makefile
[root@localhost 2017]# make
make: “main”是最新的。

1 main:main.o add.o sub.o mul.o divi.o
2 gcc -o main main.o add.o sub.o mul.o divi.o
3 main.o:main.c
4 gcc -c main.c
5 add.o:add.c
6 gcc -c add.c
7 sub.o:sub.c
8 gcc -c sub.c
9 mul.o:mul.c
10 gcc -c mul.c
11 divi.o:divi.c
12 gcc -c divi.c
13 clean:
14 :rm -f *.o
~